Square D HGL36100U31X 100A 3-Pole 600 V Circuit Breaker

Introducing the Square D HGL36100U31X — a sturdy 100A, 3-pole, 600V circuit breaker built for dependable protection in demanding three‑phase power systems.

Part Number: HGL36100U31X. This exact unit is designed for use in compatible Square D panelboards and switchgear that require a 3-pole breaker rated for 600 volts and 100 amps. Keep a genuine replacement on hand to minimize downtime and ensure consistent performance.

Key specifications at a glance

• Current rating: 100 A
• Poles: 3
• Voltage rating: 600 V
• Brand: Square D

What makes this breaker unique

The HGL36100U31X uses a three‑pole design to guarantee simultaneous disconnection of all live conductors in a three‑phase circuit, enhancing safety and helping meet electrical codes for proper phase isolation. Its 3‑pole configuration is especially valuable for motor circuits and industrial equipment where balanced protection across all phases is crucial.

Practical use cases

• Three‑phase motor feeders for pumps, compressors, conveyors, or processing equipment
• Electrical distribution in commercial or light industrial panels that service HVAC systems, fans, and heavy machinery
• Branch protection in systems where 600V class voltages are present

Why choose this Square D unit over other options

Designed to be a precise replacement in compatible Square D panels, the HGL36100U31X delivers dependable protection for three‑phase circuits. The 100A rating is ideal when you need solid protection for mid‑sized loads without oversizing the breaker, reducing nuisance trips while maintaining safety margins.

Installation and care tips

• Use only in panelboards and enclosures specified for Square D HGL series and 600V, 3‑pole configurations
• Confirm wiring gauges and termination methods align with your system requirements; replace with an identical part number for best fit and performance
• Inspect for signs of wear, overheating, or damage before installation; replace if any issues are detected

For professionals stocking Square D components, the HGL36100U31X is a reliable, purpose‑built choice when you need robust three‑phase protection at 600V. It’s a precise, durable option that keeps critical equipment safeguarded while simplifying panel maintenance and spare part planning.